includes/specials/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  * Implements Special:Recentchanges
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 use MediaWiki\MediaWikiServices;
  25 use Wikimedia\Rdbms\IResultWrapper;
  26 use Wikimedia\Rdbms\FakeResultWrapper;
  27
  28 /**
  29  * A special page that lists last changes made to the wiki
  30  *
  31  * @ingroup SpecialPage
  32  */
  33 class SpecialRecentChanges extends ChangesListSpecialPage {
  34
  35         protected static $savedQueriesPreferenceName = 'rcfilters-saved-queries';
  36         protected static $daysPreferenceName = 'rcdays'; // Use general RecentChanges preference
  37         protected static $limitPreferenceName = 'rcfilters-limit'; // Use RCFilters-specific preference
  38         protected static $collapsedPreferenceName = 'rcfilters-rc-collapsed';
  39
  40         private $watchlistFilterGroupDefinition;
  41
  42         public function __construct( $name = 'Recentchanges', $restriction = '' ) {
  43                 parent::__construct( $name, $restriction );
  44
  45                 $this->watchlistFilterGroupDefinition = [
  46                         'name' => 'watchlist',
  47                         'title' => 'rcfilters-filtergroup-watchlist',
  48                         'class' => ChangesListStringOptionsFilterGroup::class,
  49                         'priority' => -9,
  50                         'isFullCoverage' => true,
  51                         'filters' => [
  52                                 [
  53                                         'name' => 'watched',
  54                                         'label' => 'rcfilters-filter-watchlist-watched-label',
  55                                         'description' => 'rcfilters-filter-watchlist-watched-description',
  56                                         'cssClassSuffix' => 'watched',
  57                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  58                                                 return $rc->getAttribute( 'wl_user' );
  59                                         }
  60                                 ],
  61                                 [
  62                                         'name' => 'watchednew',
  63                                         'label' => 'rcfilters-filter-watchlist-watchednew-label',
  64                                         'description' => 'rcfilters-filter-watchlist-watchednew-description',
  65                                         'cssClassSuffix' => 'watchednew',
  66                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  67                                                 return $rc->getAttribute( 'wl_user' ) &&
  68                                                         $rc->getAttribute( 'rc_timestamp' ) &&
  69                                                         $rc->getAttribute( 'wl_notificationtimestamp' ) &&
  70                                                         $rc->getAttribute( 'rc_timestamp' ) >= $rc->getAttribute( 'wl_notificationtimestamp' );
  71                                         },
  72                                 ],
  73                                 [
  74                                         'name' => 'notwatched',
  75                                         'label' => 'rcfilters-filter-watchlist-notwatched-label',
  76                                         'description' => 'rcfilters-filter-watchlist-notwatched-description',
  77                                         'cssClassSuffix' => 'notwatched',
  78                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  79                                                 return $rc->getAttribute( 'wl_user' ) === null;
  80                                         },
  81                                 ]
  82                         ],
  83                         'default' => ChangesListStringOptionsFilterGroup::NONE,
  84                         'queryCallable' => function ( $specialPageClassName, $context, $dbr,
  85                                 &$tables, &$fields, &$conds, &$query_options, &$join_conds, $selectedValues ) {
  86                                 sort( $selectedValues );
  87                                 $notwatchedCond = 'wl_user IS NULL';
  88                                 $watchedCond = 'wl_user IS NOT NULL';
  89                                 $newCond = 'rc_timestamp >= wl_notificationtimestamp';
  90
  91                                 if ( $selectedValues === [ 'notwatched' ] ) {
  92                                         $conds[] = $notwatchedCond;
  93                                         return;
  94                                 }
  95
  96                                 if ( $selectedValues === [ 'watched' ] ) {
  97                                         $conds[] = $watchedCond;
  98                                         return;
  99                                 }
 100
 101                                 if ( $selectedValues === [ 'watchednew' ] ) {
 102                                         $conds[] = $dbr->makeList( [
 103                                                 $watchedCond,
 104                                                 $newCond
 105                                         ], LIST_AND );
 106                                         return;
 107                                 }
 108
 109                                 if ( $selectedValues === [ 'notwatched', 'watched' ] ) {
 110                                         // no filters
 111                                         return;
 112                                 }
 113
 114                                 if ( $selectedValues === [ 'notwatched', 'watchednew' ] ) {
 115                                         $conds[] = $dbr->makeList( [
 116                                                 $notwatchedCond,
 117                                                 $dbr->makeList( [
 118                                                         $watchedCond,
 119                                                         $newCond
 120                                                 ], LIST_AND )
 121                                         ], LIST_OR );
 122                                         return;
 123                                 }
 124
 125                                 if ( $selectedValues === [ 'watched', 'watchednew' ] ) {
 126                                         $conds[] = $watchedCond;
 127                                         return;
 128                                 }
 129
 130                                 if ( $selectedValues === [ 'notwatched', 'watched', 'watchednew' ] ) {
 131                                         // no filters
 132                                         return;
 133                                 }
 134                         }
 135                 ];
 136         }
 137
 138         /**
 139          * Main execution point
 140          *
 141          * @param string $subpage
 142          */
 143         public function execute( $subpage ) {
 144                 // Backwards-compatibility: redirect to new feed URLs
 145                 $feedFormat = $this->getRequest()->getVal( 'feed' );
 146                 if ( !$this->including() && $feedFormat ) {
 147                         $query = $this->getFeedQuery();
 148                         $query['feedformat'] = $feedFormat === 'atom' ? 'atom' : 'rss';
 149                         $this->getOutput()->redirect( wfAppendQuery( wfScript( 'api' ), $query ) );
 150
 151                         return;
 152                 }
 153
 154                 // 10 seconds server-side caching max
 155                 $out = $this->getOutput();
 156                 $out->setCdnMaxage( 10 );
 157                 // Check if the client has a cached version
 158                 $lastmod = $this->checkLastModified();
 159                 if ( $lastmod === false ) {
 160                         return;
 161                 }
 162
 163                 $this->addHelpLink(
 164                         '//meta.wikimedia.org/wiki/Special:MyLanguage/Help:Recent_changes',
 165                         true
 166                 );
 167                 parent::execute( $subpage );
 168         }
 169
 170         /**
 171          * @inheritDoc
 172          */
 173         protected function transformFilterDefinition( array $filterDefinition ) {
 174                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 175                         $filterDefinition['showHide'] = 'rc' . $filterDefinition['showHideSuffix'];
 176                 }
 177
 178                 return $filterDefinition;
 179         }
 180
 181         /**
 182          * @inheritDoc
 183          */
 184         protected function registerFilters() {
 185                 parent::registerFilters();
 186
 187                 if (
 188                         !$this->including() &&
 189                         $this->getUser()->isLoggedIn() &&
 190                         $this->getUser()->isAllowed( 'viewmywatchlist' )
 191                 ) {
 192                         $this->registerFiltersFromDefinitions( [ $this->watchlistFilterGroupDefinition ] );
 193                         $watchlistGroup = $this->getFilterGroup( 'watchlist' );
 194                         $watchlistGroup->getFilter( 'watched' )->setAsSupersetOf(
 195                                 $watchlistGroup->getFilter( 'watchednew' )
 196                         );
 197                 }
 198
 199                 $user = $this->getUser();
 200
 201                 $significance = $this->getFilterGroup( 'significance' );
 202                 $hideMinor = $significance->getFilter( 'hideminor' );
 203                 $hideMinor->setDefault( $user->getBoolOption( 'hideminor' ) );
 204
 205                 $automated = $this->getFilterGroup( 'automated' );
 206                 $hideBots = $automated->getFilter( 'hidebots' );
 207                 $hideBots->setDefault( true );
 208
 209                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 210                 if ( $reviewStatus !== null ) {
 211                         // Conditional on feature being available and rights
 212                         if ( $user->getBoolOption( 'hidepatrolled' ) ) {
 213                                 $reviewStatus->setDefault( 'unpatrolled' );
 214                                 $legacyReviewStatus = $this->getFilterGroup( 'legacyReviewStatus' );
 215                                 $legacyHidePatrolled = $legacyReviewStatus->getFilter( 'hidepatrolled' );
 216                                 $legacyHidePatrolled->setDefault( true );
 217                         }
 218                 }
 219
 220                 $changeType = $this->getFilterGroup( 'changeType' );
 221                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 222                 if ( $hideCategorization !== null ) {
 223                         // Conditional on feature being available
 224                         $hideCategorization->setDefault( $user->getBoolOption( 'hidecategorization' ) );
 225                 }
 226         }
 227
 228         /**
 229          * Process $par and put options found in $opts. Used when including the page.
 230          *
 231          * @param string $par
 232          * @param FormOptions $opts
 233          */
 234         public function parseParameters( $par, FormOptions $opts ) {
 235                 parent::parseParameters( $par, $opts );
 236
 237                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 238                 foreach ( $bits as $bit ) {
 239                         if ( is_numeric( $bit ) ) {
 240                                 $opts['limit'] = $bit;
 241                         }
 242
 243                         $m = [];
 244                         if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 245                                 $opts['limit'] = $m[1];
 246                         }
 247                         if ( preg_match( '/^days=(\d+(?:\.\d+)?)$/', $bit, $m ) ) {
 248                                 $opts['days'] = $m[1];
 249                         }
 250                         if ( preg_match( '/^namespace=(.*)$/', $bit, $m ) ) {
 251                                 $opts['namespace'] = $m[1];
 252                         }
 253                         if ( preg_match( '/^tagfilter=(.*)$/', $bit, $m ) ) {
 254                                 $opts['tagfilter'] = $m[1];
 255                         }
 256                 }
 257         }
 258
 259         /**
 260          * @inheritDoc
 261          */
 262         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 263                 $join_conds, FormOptions $opts
 264         ) {
 265                 $dbr = $this->getDB();
 266                 $user = $this->getUser();
 267
 268                 $rcQuery = RecentChange::getQueryInfo();
 269                 $tables = array_merge( $tables, $rcQuery['tables'] );
 270                 $fields = array_merge( $rcQuery['fields'], $fields );
 271                 $join_conds = array_merge( $join_conds, $rcQuery['joins'] );
 272
 273                 // JOIN on watchlist for users
 274                 if ( $user->isLoggedIn() && $user->isAllowed( 'viewmywatchlist' ) ) {
 275                         $tables[] = 'watchlist';
 276                         $fields[] = 'wl_user';
 277                         $fields[] = 'wl_notificationtimestamp';
 278                         $join_conds['watchlist'] = [ 'LEFT JOIN', [
 279                                 'wl_user' => $user->getId(),
 280                                 'wl_title=rc_title',
 281                                 'wl_namespace=rc_namespace'
 282                         ] ];
 283                 }
 284
 285                 // JOIN on page, used for 'last revision' filter highlight
 286                 $tables[] = 'page';
 287                 $fields[] = 'page_latest';
 288                 $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 289
 290                 $tagFilter = $opts['tagfilter'] ? explode( '|', $opts['tagfilter'] ) : [];
 291                 ChangeTags::modifyDisplayQuery(
 292                         $tables,
 293                         $fields,
 294                         $conds,
 295                         $join_conds,
 296                         $query_options,
 297                         $tagFilter
 298                 );
 299
 300                 if ( !$this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds,
 301                         $opts )
 302                 ) {
 303                         return false;
 304                 }
 305
 306                 if ( $this->areFiltersInConflict() ) {
 307                         return false;
 308                 }
 309
 310                 $orderByAndLimit = [
 311                         'ORDER BY' => 'rc_timestamp DESC',
 312                         'LIMIT' => $opts['limit']
 313                 ];
 314                 if ( in_array( 'DISTINCT', $query_options ) ) {
 315                         // ChangeTags::modifyDisplayQuery() adds DISTINCT when filtering on multiple tags.
 316                         // In order to prevent DISTINCT from causing query performance problems,
 317                         // we have to GROUP BY the primary key. This in turn requires us to add
 318                         // the primary key to the end of the ORDER BY, and the old ORDER BY to the
 319                         // start of the GROUP BY
 320                         $orderByAndLimit['ORDER BY'] = 'rc_timestamp DESC, rc_id DESC';
 321                         $orderByAndLimit['GROUP BY'] = 'rc_timestamp, rc_id';
 322                 }
 323                 // array_merge() is used intentionally here so that hooks can, should
 324                 // they so desire, override the ORDER BY / LIMIT condition(s); prior to
 325                 // MediaWiki 1.26 this used to use the plus operator instead, which meant
 326                 // that extensions weren't able to change these conditions
 327                 $query_options = array_merge( $orderByAndLimit, $query_options );
 328                 $rows = $dbr->select(
 329                         $tables,
 330                         $fields,
 331                         // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
 332                         // knowledge to use an index merge if it wants (it may use some other index though).
 333                         $conds + [ 'rc_new' => [ 0, 1 ] ],
 334                         __METHOD__,
 335                         $query_options,
 336                         $join_conds
 337                 );
 338
 339                 return $rows;
 340         }
 341
 342         protected function runMainQueryHook( &$tables, &$fields, &$conds,
 343                 &$query_options, &$join_conds, $opts
 344         ) {
 345                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 346                         && Hooks::run(
 347                                 'SpecialRecentChangesQuery',
 348                                 [ &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ],
 349                                 '1.23'
 350                         );
 351         }
 352
 353         protected function getDB() {
 354                 return wfGetDB( DB_REPLICA, 'recentchanges' );
 355         }
 356
 357         public function outputFeedLinks() {
 358                 $this->addFeedLinks( $this->getFeedQuery() );
 359         }
 360
 361         /**
 362          * Get URL query parameters for action=feedrecentchanges API feed of current recent changes view.
 363          *
 364          * @return array
 365          */
 366         protected function getFeedQuery() {
 367                 $query = array_filter( $this->getOptions()->getAllValues(), function ( $value ) {
 368                         // API handles empty parameters in a different way
 369                         return $value !== '';
 370                 } );
 371                 $query['action'] = 'feedrecentchanges';
 372                 $feedLimit = $this->getConfig()->get( 'FeedLimit' );
 373                 if ( $query['limit'] > $feedLimit ) {
 374                         $query['limit'] = $feedLimit;
 375                 }
 376
 377                 return $query;
 378         }
 379
 380         /**
 381          * Build and output the actual changes list.
 382          *
 383          * @param IResultWrapper $rows Database rows
 384          * @param FormOptions $opts
 385          */
 386         public function outputChangesList( $rows, $opts ) {
 387                 $limit = $opts['limit'];
 388
 389                 $showWatcherCount = $this->getConfig()->get( 'RCShowWatchingUsers' )
 390                         && $this->getUser()->getOption( 'shownumberswatching' );
 391                 $watcherCache = [];
 392
 393                 $counter = 1;
 394                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 395                 $list->initChangesListRows( $rows );
 396
 397                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 398                 $rclistOutput = $list->beginRecentChangesList();
 399                 if ( $this->isStructuredFilterUiEnabled() ) {
 400                         $rclistOutput .= $this->makeLegend();
 401                 }
 402
 403                 foreach ( $rows as $obj ) {
 404                         if ( $limit == 0 ) {
 405                                 break;
 406                         }
 407                         $rc = RecentChange::newFromRow( $obj );
 408
 409                         # Skip CatWatch entries for hidden cats based on user preference
 410                         if (
 411                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 412                                 !$userShowHiddenCats &&
 413                                 $rc->getParam( 'hidden-cat' )
 414                         ) {
 415                                 continue;
 416                         }
 417
 418                         $rc->counter = $counter++;
 419                         # Check if the page has been updated since the last visit
 420                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' )
 421                                 && !empty( $obj->wl_notificationtimestamp )
 422                         ) {
 423                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 424                         } else {
 425                                 $rc->notificationtimestamp = false; // Default
 426                         }
 427                         # Check the number of users watching the page
 428                         $rc->numberofWatchingusers = 0; // Default
 429                         if ( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 430                                 if ( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 431                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 432                                                 MediaWikiServices::getInstance()->getWatchedItemStore()->countWatchers(
 433                                                         new TitleValue( (int)$obj->rc_namespace, $obj->rc_title )
 434                                                 );
 435                                 }
 436                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 437                         }
 438
 439                         $changeLine = $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 440                         if ( $changeLine !== false ) {
 441                                 $rclistOutput .= $changeLine;
 442                                 --$limit;
 443                         }
 444                 }
 445                 $rclistOutput .= $list->endRecentChangesList();
 446
 447                 if ( $rows->numRows() === 0 ) {
 448                         $this->outputNoResults();
 449                         if ( !$this->including() ) {
 450                                 $this->getOutput()->setStatusCode( 404 );
 451                         }
 452                 } else {
 453                         $this->getOutput()->addHTML( $rclistOutput );
 454                 }
 455         }
 456
 457         /**
 458          * Set the text to be displayed above the changes
 459          *
 460          * @param FormOptions $opts
 461          * @param int $numRows Number of rows in the result to show after this header
 462          */
 463         public function doHeader( $opts, $numRows ) {
 464                 $this->setTopText( $opts );
 465
 466                 $defaults = $opts->getAllValues();
 467                 $nondefaults = $opts->getChangedValues();
 468
 469                 $panel = [];
 470                 if ( !$this->isStructuredFilterUiEnabled() ) {
 471                         $panel[] = $this->makeLegend();
 472                 }
 473                 $panel[] = $this->optionsPanel( $defaults, $nondefaults, $numRows );
 474                 $panel[] = '<hr />';
 475
 476                 $extraOpts = $this->getExtraOptions( $opts );
 477                 $extraOptsCount = count( $extraOpts );
 478                 $count = 0;
 479                 $submit = ' ' . Xml::submitButton( $this->msg( 'recentchanges-submit' )->text() );
 480
 481                 $out = Xml::openElement( 'table', [ 'class' => 'mw-recentchanges-table' ] );
 482                 foreach ( $extraOpts as $name => $optionRow ) {
 483                         # Add submit button to the last row only
 484                         ++$count;
 485                         $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';
 486
 487                         $out .= Xml::openElement( 'tr', [ 'class' => $name . 'Form' ] );
 488                         if ( is_array( $optionRow ) ) {
 489                                 $out .= Xml::tags(
 490                                         'td',
 491                                         [ 'class' => 'mw-label mw-' . $name . '-label' ],
 492                                         $optionRow[0]
 493                                 );
 494                                 $out .= Xml::tags(
 495                                         'td',
 496                                         [ 'class' => 'mw-input' ],
 497                                         $optionRow[1] . $addSubmit
 498                                 );
 499                         } else {
 500                                 $out .= Xml::tags(
 501                                         'td',
 502                                         [ 'class' => 'mw-input', 'colspan' => 2 ],
 503                                         $optionRow . $addSubmit
 504                                 );
 505                         }
 506                         $out .= Xml::closeElement( 'tr' );
 507                 }
 508                 $out .= Xml::closeElement( 'table' );
 509
 510                 $unconsumed = $opts->getUnconsumedValues();
 511                 foreach ( $unconsumed as $key => $value ) {
 512                         $out .= Html::hidden( $key, $value );
 513                 }
 514
 515                 $t = $this->getPageTitle();
 516                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 517                 $form = Xml::tags( 'form', [ 'action' => wfScript() ], $out );
 518                 $panel[] = $form;
 519                 $panelString = implode( "\n", $panel );
 520
 521                 $rcoptions = Xml::fieldset(
 522                         $this->msg( 'recentchanges-legend' )->text(),
 523                         $panelString,
 524                         [ 'class' => 'rcoptions cloptions' ]
 525                 );
 526
 527                 // Insert a placeholder for RCFilters
 528                 if ( $this->isStructuredFilterUiEnabled() ) {
 529                         $rcfilterContainer = Html::element(
 530                                 'div',
 531                                 [ 'class' => 'rcfilters-container' ]
 532                         );
 533
 534                         $loadingContainer = Html::rawElement(
 535                                 'div',
 536                                 [ 'class' => 'rcfilters-spinner' ],
 537                                 Html::element(
 538                                         'div',
 539                                         [ 'class' => 'rcfilters-spinner-bounce' ]
 540                                 )
 541                         );
 542
 543                         // Wrap both with rcfilters-head
 544                         $this->getOutput()->addHTML(
 545                                 Html::rawElement(
 546                                         'div',
 547                                         [ 'class' => 'rcfilters-head' ],
 548                                         $rcfilterContainer . $rcoptions
 549                                 )
 550                         );
 551
 552                         // Add spinner
 553                         $this->getOutput()->addHTML( $loadingContainer );
 554                 } else {
 555                         $this->getOutput()->addHTML( $rcoptions );
 556                 }
 557
 558                 $this->setBottomText( $opts );
 559         }
 560
 561         /**
 562          * Send the text to be displayed above the options
 563          *
 564          * @param FormOptions $opts Unused
 565          */
 566         function setTopText( FormOptions $opts ) {
 567                 $message = $this->msg( 'recentchangestext' )->inContentLanguage();
 568                 if ( !$message->isDisabled() ) {
 569                         $contLang = MediaWikiServices::getInstance()->getContentLanguage();
 570                         // Parse the message in this weird ugly way to preserve the ability to include interlanguage
 571                         // links in it (T172461). In the future when T66969 is resolved, perhaps we can just use
 572                         // $message->parse() instead. This code is copied from Message::parseText().
 573                         $parserOutput = MessageCache::singleton()->parse(
 574                                 $message->plain(),
 575                                 $this->getPageTitle(),
 576                                 /*linestart*/true,
 577                                 // Message class sets the interface flag to false when parsing in a language different than
 578                                 // user language, and this is wiki content language
 579                                 /*interface*/false,
 580                                 $contLang
 581                         );
 582                         $content = $parserOutput->getText( [
 583                                 'enableSectionEditLinks' => false,
 584                         ] );
 585                         // Add only metadata here (including the language links), text is added below
 586                         $this->getOutput()->addParserOutputMetadata( $parserOutput );
 587
 588                         $langAttributes = [
 589                                 'lang' => $contLang->getHtmlCode(),
 590                                 'dir' => $contLang->getDir(),
 591                         ];
 592
 593                         $topLinksAttributes = [ 'class' => 'mw-recentchanges-toplinks' ];
 594
 595                         if ( $this->isStructuredFilterUiEnabled() ) {
 596                                 // Check whether the widget is already collapsed or expanded
 597                                 $collapsedState = $this->getRequest()->getCookie( 'rcfilters-toplinks-collapsed-state' );
 598                                 // Note that an empty/unset cookie means collapsed, so check for !== 'expanded'
 599                                 $topLinksAttributes[ 'class' ] .= $collapsedState !== 'expanded' ?
 600                                         ' mw-recentchanges-toplinks-collapsed' : '';
 601
 602                                 $this->getOutput()->enableOOUI();
 603                                 $contentTitle = new OOUI\ButtonWidget( [
 604                                         'classes' => [ 'mw-recentchanges-toplinks-title' ],
 605                                         'label' => new OOUI\HtmlSnippet( $this->msg( 'rcfilters-other-review-tools' )->parse() ),
 606                                         'framed' => false,
 607                                         'indicator' => $collapsedState !== 'expanded' ? 'down' : 'up',
 608                                         'flags' => [ 'progressive' ],
 609                                 ] );
 610
 611                                 $contentWrapper = Html::rawElement( 'div',
 612                                         array_merge(
 613                                                 [ 'class' => 'mw-recentchanges-toplinks-content mw-collapsible-content' ],
 614                                                 $langAttributes
 615                                         ),
 616                                         $content
 617                                 );
 618                                 $content = $contentTitle . $contentWrapper;
 619                         } else {
 620                                 // Language direction should be on the top div only
 621                                 // if the title is not there. If it is there, it's
 622                                 // interface direction, and the language/dir attributes
 623                                 // should be on the content itself
 624                                 $topLinksAttributes = array_merge( $topLinksAttributes, $langAttributes );
 625                         }
 626
 627                         $this->getOutput()->addHTML(
 628                                 Html::rawElement( 'div', $topLinksAttributes, $content )
 629                         );
 630                 }
 631         }
 632
 633         /**
 634          * Get options to be displayed in a form
 635          *
 636          * @param FormOptions $opts
 637          * @return array
 638          */
 639         function getExtraOptions( $opts ) {
 640                 $opts->consumeValues( [
 641                         'namespace', 'invert', 'associated', 'tagfilter'
 642                 ] );
 643
 644                 $extraOpts = [];
 645                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 646
 647                 $tagFilter = ChangeTags::buildTagFilterSelector(
 648                         $opts['tagfilter'], false, $this->getContext() );
 649                 if ( count( $tagFilter ) ) {
 650                         $extraOpts['tagfilter'] = $tagFilter;
 651                 }
 652
 653                 // Don't fire the hook for subclasses. (Or should we?)
 654                 if ( $this->getName() === 'Recentchanges' ) {
 655                         Hooks::run( 'SpecialRecentChangesPanel', [ &$extraOpts, $opts ] );
 656                 }
 657
 658                 return $extraOpts;
 659         }
 660
 661         /**
 662          * Add page-specific modules.
 663          */
 664         protected function addModules() {
 665                 parent::addModules();
 666                 $out = $this->getOutput();
 667                 $out->addModules( 'mediawiki.special.recentchanges' );
 668         }
 669
 670         /**
 671          * Get last modified date, for client caching
 672          * Don't use this if we are using the patrol feature, patrol changes don't
 673          * update the timestamp
 674          *
 675          * @return string|bool
 676          */
 677         public function checkLastModified() {
 678                 $dbr = $this->getDB();
 679                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', '', __METHOD__ );
 680
 681                 return $lastmod;
 682         }
 683
 684         /**
 685          * Creates the choose namespace selection
 686          *
 687          * @param FormOptions $opts
 688          * @return string
 689          */
 690         protected function namespaceFilterForm( FormOptions $opts ) {
 691                 $nsSelect = Html::namespaceSelector(
 692                         [ 'selected' => $opts['namespace'], 'all' => '' ],
 693                         [ 'name' => 'namespace', 'id' => 'namespace' ]
 694                 );
 695                 $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
 696                 $invert = Xml::checkLabel(
 697                         $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
 698                         $opts['invert'],
 699                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 700                 );
 701                 $associated = Xml::checkLabel(
 702                         $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
 703                         $opts['associated'],
 704                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 705                 );
 706
 707                 return [ $nsLabel, "$nsSelect $invert $associated" ];
 708         }
 709
 710         /**
 711          * Filter $rows by categories set in $opts
 712          *
 713          * @deprecated since 1.31
 714          *
 715          * @param IResultWrapper &$rows Database rows
 716          * @param FormOptions $opts
 717          */
 718         function filterByCategories( &$rows, FormOptions $opts ) {
 719                 wfDeprecated( __METHOD__, '1.31' );
 720
 721                 $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );
 722
 723                 if ( !count( $categories ) ) {
 724                         return;
 725                 }
 726
 727                 # Filter categories
 728                 $cats = [];
 729                 foreach ( $categories as $cat ) {
 730                         $cat = trim( $cat );
 731                         if ( $cat == '' ) {
 732                                 continue;
 733                         }
 734                         $cats[] = $cat;
 735                 }
 736
 737                 # Filter articles
 738                 $articles = [];
 739                 $a2r = [];
 740                 $rowsarr = [];
 741                 foreach ( $rows as $k => $r ) {
 742                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 743                         $id = $nt->getArticleID();
 744                         if ( $id == 0 ) {
 745                                 continue; # Page might have been deleted...
 746                         }
 747                         if ( !in_array( $id, $articles ) ) {
 748                                 $articles[] = $id;
 749                         }
 750                         if ( !isset( $a2r[$id] ) ) {
 751                                 $a2r[$id] = [];
 752                         }
 753                         $a2r[$id][] = $k;
 754                         $rowsarr[$k] = $r;
 755                 }
 756
 757                 # Shortcut?
 758                 if ( !count( $articles ) || !count( $cats ) ) {
 759                         return;
 760                 }
 761
 762                 # Look up
 763                 $catFind = new CategoryFinder;
 764                 $catFind->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 765                 $match = $catFind->run();
 766
 767                 # Filter
 768                 $newrows = [];
 769                 foreach ( $match as $id ) {
 770                         foreach ( $a2r[$id] as $rev ) {
 771                                 $k = $rev;
 772                                 $newrows[$k] = $rowsarr[$k];
 773                         }
 774                 }
 775                 $rows = new FakeResultWrapper( array_values( $newrows ) );
 776         }
 777
 778         /**
 779          * Makes change an option link which carries all the other options
 780          *
 781          * @param string $title
 782          * @param array $override Options to override
 783          * @param array $options Current options
 784          * @param bool $active Whether to show the link in bold
 785          * @return string
 786          */
 787         function makeOptionsLink( $title, $override, $options, $active = false ) {
 788                 $params = $this->convertParamsForLink( $override + $options );
 789
 790                 if ( $active ) {
 791                         $title = new HtmlArmor( '<strong>' . htmlspecialchars( $title ) . '</strong>' );
 792                 }
 793
 794                 return $this->getLinkRenderer()->makeKnownLink( $this->getPageTitle(), $title, [
 795                         'data-params' => json_encode( $override ),
 796                         'data-keys' => implode( ',', array_keys( $override ) ),
 797                 ], $params );
 798         }
 799
 800         /**
 801          * Creates the options panel.
 802          *
 803          * @param array $defaults
 804          * @param array $nondefaults
 805          * @param int $numRows Number of rows in the result to show after this header
 806          * @return string
 807          */
 808         function optionsPanel( $defaults, $nondefaults, $numRows ) {
 809                 $options = $nondefaults + $defaults;
 810
 811                 $note = '';
 812                 $msg = $this->msg( 'rclegend' );
 813                 if ( !$msg->isDisabled() ) {
 814                         $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
 815                 }
 816
 817                 $lang = $this->getLanguage();
 818                 $user = $this->getUser();
 819                 $config = $this->getConfig();
 820                 if ( $options['from'] ) {
 821                         $resetLink = $this->makeOptionsLink( $this->msg( 'rclistfromreset' ),
 822                                 [ 'from' => '' ], $nondefaults );
 823
 824                         $noteFromMsg = $this->msg( 'rcnotefrom' )
 825                                 ->numParams( $options['limit'] )
 826                                 ->params(
 827                                         $lang->userTimeAndDate( $options['from'], $user ),
 828                                         $lang->userDate( $options['from'], $user ),
 829                                         $lang->userTime( $options['from'], $user )
 830                                 )
 831                                 ->numParams( $numRows );
 832                         $note .= Html::rawElement(
 833                                         'span',
 834                                         [ 'class' => 'rcnotefrom' ],
 835                                         $noteFromMsg->parse()
 836                                 ) .
 837                                 ' ' .
 838                                 Html::rawElement(
 839                                         'span',
 840                                         [ 'class' => 'rcoptions-listfromreset' ],
 841                                         $this->msg( 'parentheses' )->rawParams( $resetLink )->parse()
 842                                 ) .
 843                                 '<br />';
 844                 }
 845
 846                 # Sort data for display and make sure it's unique after we've added user data.
 847                 $linkLimits = $config->get( 'RCLinkLimits' );
 848                 $linkLimits[] = $options['limit'];
 849                 sort( $linkLimits );
 850                 $linkLimits = array_unique( $linkLimits );
 851
 852                 $linkDays = $config->get( 'RCLinkDays' );
 853                 $linkDays[] = $options['days'];
 854                 sort( $linkDays );
 855                 $linkDays = array_unique( $linkDays );
 856
 857                 // limit links
 858                 $cl = [];
 859                 foreach ( $linkLimits as $value ) {
 860                         $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 861                                 [ 'limit' => $value ], $nondefaults, $value == $options['limit'] );
 862                 }
 863                 $cl = $lang->pipeList( $cl );
 864
 865                 // day links, reset 'from' to none
 866                 $dl = [];
 867                 foreach ( $linkDays as $value ) {
 868                         $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 869                                 [ 'days' => $value, 'from' => '' ], $nondefaults, $value == $options['days'] );
 870                 }
 871                 $dl = $lang->pipeList( $dl );
 872
 873                 $showhide = [ 'show', 'hide' ];
 874
 875                 $links = [];
 876
 877                 foreach ( $this->getLegacyShowHideFilters() as $key => $filter ) {
 878                         $msg = $filter->getShowHide();
 879                         $linkMessage = $this->msg( $msg . '-' . $showhide[1 - $options[$key]] );
 880                         // Extensions can define additional filters, but don't need to define the corresponding
 881                         // messages. If they don't exist, just fall back to 'show' and 'hide'.
 882                         if ( !$linkMessage->exists() ) {
 883                                 $linkMessage = $this->msg( $showhide[1 - $options[$key]] );
 884                         }
 885
 886                         $link = $this->makeOptionsLink( $linkMessage->text(),
 887                                 [ $key => 1 - $options[$key] ], $nondefaults );
 888
 889                         $attribs = [
 890                                 'class' => "$msg rcshowhideoption clshowhideoption",
 891                                 'data-filter-name' => $filter->getName(),
 892                         ];
 893
 894                         if ( $filter->isFeatureAvailableOnStructuredUi( $this ) ) {
 895                                 $attribs['data-feature-in-structured-ui'] = true;
 896                         }
 897
 898                         $links[] = Html::rawElement(
 899                                 'span',
 900                                 $attribs,
 901                                 $this->msg( $msg )->rawParams( $link )->parse()
 902                         );
 903                 }
 904
 905                 // show from this onward link
 906                 $timestamp = wfTimestampNow();
 907                 $now = $lang->userTimeAndDate( $timestamp, $user );
 908                 $timenow = $lang->userTime( $timestamp, $user );
 909                 $datenow = $lang->userDate( $timestamp, $user );
 910                 $pipedLinks = '<span class="rcshowhide">' . $lang->pipeList( $links ) . '</span>';
 911
 912                 $rclinks = '<span class="rclinks">' . $this->msg( 'rclinks' )->rawParams( $cl, $dl, '' )
 913                         ->parse() . '</span>';
 914
 915                 $rclistfrom = '<span class="rclistfrom">' . $this->makeOptionsLink(
 916                         $this->msg( 'rclistfrom' )->rawParams( $now, $timenow, $datenow )->parse(),
 917                         [ 'from' => $timestamp ],
 918                         $nondefaults
 919                 ) . '</span>';
 920
 921                 return "{$note}$rclinks<br />$pipedLinks<br />$rclistfrom";
 922         }
 923
 924         public function isIncludable() {
 925                 return true;
 926         }
 927
 928         protected function getCacheTTL() {
 929                 return 60 * 5;
 930         }
 931
 932         public function getDefaultLimit() {
 933                 $systemPrefValue = $this->getUser()->getIntOption( 'rclimit' );
 934                 // Prefer the RCFilters-specific preference if RCFilters is enabled
 935                 if ( $this->isStructuredFilterUiEnabled() ) {
 936                         return $this->getUser()->getIntOption( static::$limitPreferenceName, $systemPrefValue );
 937                 }
 938
 939                 // Otherwise, use the system rclimit preference value
 940                 return $systemPrefValue;
 941         }
 942 }